... WP:High pressure API 6A Wellhead accessory- high pressure union High-pressure union, importing international advanced technology, is forged with high- ... 100#, 200#, 206#, 207#,211#, 400#, 600#, 602#, 1002#, 1003#, 1502# and 2002#. It is an important part for transporting oil ... valve, mud gate valve, chock valve, etc)3) Fitting(union, manifold,elbows), bop. API 6A Wellhead accessory- high pressure ...